Displaying BPDU status and related information
Syntax:
show spanning-tree bpdu-protection <port-list>
Displays the BPDU protection state and errant BPDU count for ports in the port list.
Displaying BPDU status in show spanning tree output
switch# show spanning-tree 22 Spanning Tree Information STP Enabled [No] : Yes Mode : RPVST RPVST Enabled VLANs : 10,20 Switch MAC Address : 0024a8-d13a40 Port : 22 Status : Up Port Type : 100/1000T BPDU Protection : No BPDU Filtering : No Root Guard : No TCN Guard : No Loop Guard : No Admin Edge Port : No Admin PointToPoint MAC : Yes VLAN Port Port Port Designated Hello Oper Oper ID Path-Cost Priority State Bridge Time Edge PtP ------ ---------- --------- ---------- ------------- ----- ----- ------ 20 20000 128 Forwarding 0024a8-d13a40 2 No Yes
Displaying BPDU protection status on specific ports
switch# show spanning-tree bpdu-protection 11-12,21-24 Status and Counters - STP BPDU Protection Information BPDU Protection Timeout (sec) : 60 BPDU Protected Ports : 23-24 Port Type Protection State Errant BPDUs ------ --------- ---------- ----------------- ------------ 11 100/1000T No 0 12 100/1000T No 0 21 100/1000T No 0 22 100/1000T No 0 23 100/1000T Yes 0 24 100/1000T Yes 0